... buy ten sets ,we will send you other one for free, also twenty for two and so on ) WHAT YOU ... 6V.Suitable for agricultural smoke machine, agricultural sprays, gas burner, natural gas, automatic electronic gas burner, etc 2.Specification:input voltage: 3v ... with power line of smoke machine, agricultural sprays, gas burner, natural gas, automatic electronic gas burner, etc 4.Note: The product above ...